标准摘要
[中文适用范围]： 本文件规定了三种估算佩戴听力保护器时有效的 A 加权声压级的方法（倍频程法、HML 法和 SNR 法）。 这些方法适用于噪声的声压级或等效连续声压级。 虽然主要用于稳定的噪声暴露，但这些方法也适用于包含脉冲成分的噪声。 这些方法可能不适合用于峰值声压级测量。 倍频程、H、M、L 或 SNR 值适合于建立用于选择或比较听力保护器的声音衰减标准，和/或设置最小可接受的声音衰减要求。 [外文原描述]： This document specifies three methods (the octave-band, HML and SNR methods) of estimating the A-weighted sound pressure levels effective when hearing protectors are worn. The methods are applicable to either the sound pressure level or the equivalent continuous sound pressure level of the noise. Although primarily intended for steady noise exposures, the methods are also applicable to noises containing impulsive components. It is possible that these methods could not be suitable for use with peak sound pressure level measurements. The octave-band, H , M , L or SNR values are suitable for establishing sound attenuation criteria for selecting or comparing hearing protectors, and/or setting minimum acceptable sound attenuation requirements.
英文名称Acoustics — Hearing protectors — Part 2: Estimation of effective A-weighted sound pressure levels when hearing protectors are worn